CN113879438A

CN113879438A - Motorcycle with a motorcycle body

Info

Publication number: CN113879438A
Application number: CN202010637001.2A
Authority: CN
Inventors: 黄建智
Original assignee: Kwang Yang Motor Co Ltd
Current assignee: Kwang Yang Motor Co Ltd
Priority date: 2020-07-03
Filing date: 2020-07-03
Publication date: 2022-01-04

Abstract

The invention provides a motorcycle, which is suitable for being matched with a cooling liquid to reduce the operating temperature and comprises an engine unit, an exhaust unit communicated with the engine unit and a heat dissipation unit suitable for cooling the cooling liquid passing through the engine unit. The engine unit comprises a cylinder, a box body which is connected with the cylinder and a part of which defines a crank chamber, and a crank shaft which can be partially accommodated in the crank chamber in a pivoting way. The exhaust unit includes a muffler at one side of one end of the crankshaft, and the heat radiating unit includes a radiator at an end of the crankshaft opposite to the muffler. Through arranging the silencer of the exhaust unit and the radiator on the left side and the right side of the crankshaft respectively, the cooling liquid can not be heated up under the influence of the exhaust unit after passing through the radiator, and the cooling liquid can exert a better cooling effect.

Description

Motorcycle with a motorcycle body

Technical Field

The invention relates to a motorcycle, in particular to a motorcycle with a water-cooled engine.

Background

Referring to fig. 1, taiwan patent application No. 201730023 discloses a motorcycle engine cooling apparatus for a motor vehicle 8, the motor vehicle 8 including an exhaust pipe 81 mounted on a right side and a water-cooled internal combustion engine (not shown), the motorcycle engine cooling apparatus including a radiator 9 mounted on a right side of the motor vehicle 8. When the motor vehicle 8 is running, the heat generated by the water-cooled internal combustion engine is absorbed by a cooling fluid (not shown) sequentially flowing through the water-cooled internal combustion engine and the radiator 9, and the heat of the cooling fluid is discharged to the outside of the motor vehicle 8 by the radiator 9, so that the cooled cooling fluid can be returned to the water-cooled internal combustion engine for cooling. However, in the conventional configuration, the exhaust pipe 81 and the radiator 9 are closely adjacent to each other, so that the cooling liquid is easily affected by the high temperature exhaust pipe 81 to increase the temperature after being cooled by the radiator 9, thereby reducing the cooling efficiency and improving the cooling efficiency.

Disclosure of Invention

[ problems to be solved by the invention ]

Accordingly, an object of the present invention is to provide a motorcycle in which coolant is not heated by an exhaust pipe.

[ means for solving problems ]

Thus, as in claim 1, the motorcycle of the present invention is adapted to be used with a coolant for reducing the operating temperature, and includes an engine unit, an exhaust unit communicating with the engine unit, and a heat dissipating unit adapted to cool the coolant passing through the engine unit. The engine unit comprises a cylinder, a box body which is connected with the cylinder and a part of which defines a crank chamber, and a crank shaft which can be partially accommodated in the crank chamber in a pivoting way. The exhaust unit comprises a silencer positioned on one side of one end of the crankshaft, and the heat dissipation unit comprises a radiator positioned on one end of the crankshaft opposite to the silencer, so that the silencer and the radiator are respectively positioned on the left side and the right side of the crankshaft.

In the invention according to claim 2, the heat dissipating unit further includes a fan disposed between the heat sink and the housing.

According to claim 3, the fan is rotatable coaxially with the crankshaft, and the radiator has a fin group formed with a plurality of water passages corresponding to the axial center of the fan and adapted to cool the coolant, an upper water tank communicating with the top sides of the water passages, and a lower water tank communicating with the bottom sides of the water passages.

According to the invention of claim 4, a reference line passing through the geometric center of the cylinder in the front-rear direction of the motorcycle is defined, and the engine unit further comprises a cover covering a side of the case opposite to the radiator, the case having a first case portion between the reference line and the radiator, and a second case portion between the reference line and the cover, a portion of the second case portion cooperating with the cover to define a first transmission chamber on the same side as the muffler.

As in claim 5, a central plane passing through the geometric center of the motorcycle along the front-rear direction of the motorcycle is defined, wherein the exhaust unit further comprises a conduit communicating between the cylinder and the muffler, the cylinder is formed with an air outlet communicating with the conduit, the muffler is formed with an air inlet communicating with the conduit, a longitudinal axis parallel to the central plane and passing through the air inlet, a front transverse axis perpendicular to the central plane and passing through the air outlet, and a rear transverse axis perpendicular to the central plane and passing through the air inlet are defined, and at least a portion of the first transmission chamber is located within a range defined by the cooperation of the central plane, the longitudinal axis, the front transverse axis, and the rear transverse axis.

According to claim 6, at least a part of the muffler is located within a projection range of the first transmission chamber in the front-rear direction of the motorcycle.

The invention as in claim 7 further comprising a frame, wherein the engine unit and the muffler are mounted to the frame in a non-relative motion.

As in claim 8, the motorcycle further includes a transmission unit connected to the engine unit, wherein a portion of the case further defines a second transmission chamber spaced from the crank chamber in a front-rear direction of the motorcycle, the transmission unit includes a first transmission member received in the first transmission chamber and driven by the crank shaft, and a gear set received in the second transmission chamber and driven by the first transmission member, the gear set having an output shaft spaced from and arranged in parallel with the crank shaft in the front-rear direction of the motorcycle.

The invention according to claim 9 further comprising a rear wheel spaced from the engine unit, the transmission unit further comprising a second transmission member driven by the output shaft for driving the rear wheel.

[ Effect achieved by the present invention ]

In the invention of claim 1, the muffler of the exhaust unit and the radiator of the heat dissipation unit are respectively disposed on opposite sides of the crankshaft, so as to prevent the cooling fluid from being heated by the high-temperature exhaust unit after being cooled by the radiator, thereby improving the heat dissipation efficiency of the radiator and enabling the cooling fluid to exert a desired cooling effect.

In the

inventions

2 and 3, the fan forcibly draws the hot air of the radiator toward the engine unit and discharges the hot air, so that the temperature of the radiator can be reduced and the heat dissipation efficiency of the radiator can be improved.

In the invention of

claim

4 and 5, the first transmission chamber and the muffler are disposed on the same side of the crankshaft, and the first transmission chamber is disposed between the cylinder and the muffler, so that the other side of the crankshaft has enough space for the radiator to be disposed.

In the invention of claim 6, the muffler is disposed relatively rearward of the first transmission chamber, the entire width of the motorcycle can be reduced, and the tilting angle of the motorcycle at the time of overbending can be increased.

In the invention of claim 7, the engine unit and the muffler are fixed to the frame, so that the engine unit and the muffler do not swing with the change of road conditions during the driving of the motorcycle, the center of gravity of the motorcycle is more stable, and the maneuverability of the motorcycle can be improved.

In the invention according to claim 8 or 9, the gear train is disposed in a second transmission chamber located relatively rearward of the crank chamber, and the second transmission member transmits the power from the output shaft to the rear wheel, so that the distance between the crankshaft and the output shaft can be reduced, the length of the first transmission chamber can be shortened, and the structure of the engine unit can be made more compact.

Drawings

Other features and effects of the present invention will be apparent from the embodiments with reference to the accompanying drawings, in which:

FIG. 1 is a fragmentary perspective view of an engine cooling apparatus for a motorcycle disclosed in Taiwan patent application No. 201730023;

FIG. 2 is a side elevational view of one embodiment of the motorcycle of the present invention;

FIG. 3 is a partially enlarged top plan view to assist in explaining the embodiment at a different angle than FIG. 2;

FIG. 4 is an enlarged partial bottom view illustrating the relative positions of an engine unit, an exhaust unit, and a transmission unit of the embodiment;

fig. 5 is a fragmentary partial sectional view illustrating the internal construction of a heat dissipating unit, the engine unit, and the transmission unit of the embodiment;

FIG. 6 is a fragmentary exploded perspective view further illustrating the relative positions of the components of the heat dissipation unit; and

fig. 7 is a partially enlarged front view illustrating that a muffler of the exhaust unit is located at least partially within a projection range of a first transmission chamber of the transmission unit in the front-rear direction of the motorcycle.

List of reference numerals

1. Engine Unit

11. cylinder

110. air outlet

12. box

120. crank chamber

121. first tank section

122. second tank section

123. first transfer chamber

124. second transfer chamber

13. crankshaft

14. case cover

2. exhaust unit

21. muffler

210. air intake

22. catheter

3. heat dissipation unit

31. radiator

310. water course

311. radiating fin group

312. water feeding tank

313. water drainage tank

32. fan

4. transmission unit

42. first transmission piece

43. Gear train

431. output shaft

44. second transmission member

5. frame

6. rear wheel

L1. longitudinal axis

L2. front transverse axis

L3. rear transverse axis

P. central plane

X. reference line.

Detailed Description

Referring to fig. 2 and 3, an embodiment of the motorcycle of the present invention is a vehicle with a water-cooled engine, which is suitable for reducing the operating temperature of the motorcycle in cooperation with a coolant. The motorcycle comprises an engine unit 1, an exhaust unit 2 communicated with the engine unit 1, a heat dissipation unit 3 suitable for cooling the cooling liquid passing through the engine unit 1, a transmission unit 4 connected with the engine unit 1, a frame 5 fixedly arranged on the engine unit 1, and a rear wheel 6 spaced from the engine unit 1. Of course, the motorcycle also includes other components, such as a faucet or a housing, etc., however, these components are not essential to the present disclosure, and for convenience of description, they are not described in detail in the present disclosure, and are omitted from the drawings.

Referring to fig. 4 and 5, the engine unit 1 includes a cylinder 11 formed with an air outlet 110, a housing 12 engaging the cylinder 11 and partially defining a crank chamber 120, a crankshaft 13 pivotally received in the crank chamber 120, and a cover 14 covering the housing 12. A reference line X passing through the geometric center of the cylinder 11 along the front-rear direction of the motorcycle is defined, the box body 12 has a first box portion 121 and a second box portion 122 respectively located on two opposite sides of the reference line X, a portion of the second box portion 122 cooperates with the box cover 14 to define a first transmission chamber 123, and a portion of the box body 12 further defines a second transmission chamber 124 spaced from the crank chamber 120 along the front-rear direction of the motorcycle.

Referring to fig. 2 and 4, the exhaust unit 2 includes a muffler 21 at one side of one end of the crankshaft 13, and a duct 22 communicating between the cylinder 11 and the muffler 21, the muffler 21 being formed with an intake hole 210. In the present embodiment, the muffler 21 and the engine unit 1 are both fixed to the frame 5 in a non-relative movement manner, so that the muffler 21 and the engine unit 1 will not swing along with the change of the road condition during the driving process, the overall center of gravity of the present embodiment is more stable, and the maneuverability of the present embodiment can be improved. In addition, the first transmission chamber 123 is located at the same side as the muffler 21 of the exhaust unit 2, and the duct 22 is communicated with the air outlet 110 of the cylinder 11 and the air inlet 210 of the muffler 21 to guide out the high-temperature gas inside the engine unit 1, so that the high-temperature gas can be discharged from the cylinder 11 through the air outlet 110 and enter the muffler 21 through the air inlet 210, and finally the high-temperature gas is discharged from the muffler 21.

Referring to fig. 5 and 6, the heat dissipating unit 3 includes a heat sink 31 disposed at an end of the crankshaft 13 opposite to the muffler 21, and a fan 32 disposed between the heat sink 31 and the case 12. The radiator 31 has a fin group 311 formed with a plurality of water passages 310 corresponding to the axial center of the fan 32 and adapted to cool the cooling liquid, an upper water tank 312 communicating the top sides of the water passages 310, and a lower water tank 313 communicating the bottom sides of the water passages 310.

In the present embodiment, the first box portion 121 is located between the reference line X and the heat sink 31 of the heat dissipating unit 3, and the cover 14 is disposed on a side of the box 12 of the engine unit 1 opposite to the heat sink 31, that is, the cover 14 is disposed on the second box portion 122 of the box 12. In addition, the fan 32 of the heat dissipating unit 3 is located outside the case 12 and can rotate coaxially with the crankshaft 13 of the engine unit 1, that is, no additional power is required for driving, and during the operation of the present embodiment, the fan 32 can operate synchronously with the rotation of the crankshaft 13.

Referring to fig. 3 and 5, the transmission unit 4 includes a first transmission member 42 accommodated in the first transmission chamber 123 of the engine unit 1 and driven by the crankshaft 13, a gear set 43 accommodated in the second transmission chamber 124 of the engine unit 1 and driven by the first transmission member 42, and a second transmission member 44 driven by the gear set 43 and driving the rear wheel 6. The gear set 43 has an output shaft 431 arranged in parallel with the crankshaft 13 at an interval in the front-rear direction of the motorcycle, and the second transmission member 44 is driven by the output shaft 431.

In the present embodiment, the second transmission member 44 is exemplified by a belt, but the type of the second transmission member 44 is not limited thereto, and may be a rear rocker arm or other transmission mechanism as long as the power from the engine unit 1 is transmitted to the rear wheel 6 and drives the rear wheel 6 to rotate. By disposing the gear set 43 in the second transmission chamber 124 located at the rear of the crank chamber 120, and transmitting the power from the output shaft 431 to the rear wheel 6 by the second transmission member 44, the distance between the crankshaft 13 and the output shaft 431 can be reduced, so as to shorten the length of the first transmission chamber 123 and make the structure of the engine unit 1 more compact.

Referring to fig. 4, defining a central plane P passing through the geometric center of the present embodiment in the front-rear direction of the motorcycle, a longitudinal axis L1 parallel to the central plane P and passing through the air inlet hole 210 of the muffler 21, a front transverse axis L2 perpendicular to the central plane P and passing through the air outlet hole 110 of the cylinder 11, and a rear transverse axis L3 perpendicular to the central plane P and passing through the air inlet hole 210, the first transmission chamber 123 is located at least partially within a range defined by the central plane P, the longitudinal axis L1, the front transverse axis L2, and the rear transverse axis L3. By disposing the first transmission chamber 123 and the muffler 21 on the same side of the crankshaft 13, and disposing the first transmission chamber 123 between the cylinder 11 and the muffler 21, the other side of the crankshaft 13 has enough space for the radiator 31 to be disposed.

Referring to fig. 7, in the present embodiment, at least a part of the muffler 21 is located in the projection range of the first transmission chamber 123 in the front-rear direction of the motorcycle, specifically, when viewed from the front to the rear of the present embodiment, at least a part of the muffler 21 is located right behind the first transmission chamber 123 as shown in fig. 7, and at least a part of the muffler 21 is shielded by one of the second box portion 122 of the engine unit 1 and the box cover 14 of the engine unit 1. Therefore, the whole width of the embodiment can be reduced, and the tilting angle of the embodiment during over-bending can be increased.

Referring to fig. 4 and 6, in the operation process of the present embodiment, the cooling liquid firstly flows through the engine unit 1, absorbs the heat generated by the engine unit 1, then sequentially flows through the upper water tank 312, the water channels 310, the fin group 311, and the lower water tank 313 of the radiator 31, and then returns to the engine unit 1 for the next round of cooling. By providing the muffler 21 of the exhaust unit 2 and the radiator 31 of the heat radiating unit 3 on the left and right sides of the crankshaft 13, respectively, the coolant is not heated by the high-temperature muffler 21 after passing through the radiator 31, and the cooling effect that the coolant can exert can be ensured.

When the coolant flows through the water channels 310, the heat in the coolant is transferred to the fin assembly 311 located around the water channels 310 and dissipated to the air around the fin assembly 311, so that the temperature of the air around the fin assembly 311 is increased to form hot air. Since the axial position of the fan 32 of the heat dissipating unit 3 corresponds to the water channels 310, the axial position of the fan 32 is directly aligned with the heat dissipating fin set 311, and in this embodiment, the fan 32 can be a centrifugal fan, so that when the fan 32 is running, the hot air staying around the heat dissipating fin set 311 can be directly and forcibly drawn toward the engine unit 1, and the hot air can be blown out from an opening (not shown) below the engine unit 1 and facing the ground. Therefore, the temperature of the heat sink 31 can be effectively reduced, and the heat dissipation efficiency of the heat sink 31 is improved.

As described above, in the motorcycle according to the present invention, the muffler 21 of the exhaust unit 2 and the radiator 31 of the heat radiation unit 3 are respectively disposed on opposite sides of the crankshaft 13 of the engine unit 1, so that the coolant is prevented from being heated again by the exhaust unit 2 having a high temperature after being cooled by the radiator 31, thereby improving the heat radiation efficiency of the radiator 31 and ensuring the cooling effect of the coolant. In addition, the adjustment of the arrangement positions of other elements and the configuration of the space defined by other elements are assisted, so that the internal structure of the embodiment can be more compact, the overall center of gravity can be stabilized, and the controllability can be improved, thereby really achieving the purpose of the invention.

The above description is only an example of the present invention, and the scope of the present invention should not be limited thereby, and all the simple equivalent changes and modifications made according to the claims and the contents of the specification should be included in the scope covered by the present invention.

Claims

1. A motorcycle for reducing operating temperature in combination with a coolant, comprising:

the engine unit comprises a cylinder, a box body which is connected with the cylinder and a part of which defines a crank chamber, and a crank shaft which can be partially accommodated in the crank chamber in a pivoting way;

an exhaust unit communicating with the cylinder and including a muffler at one side of one end of the crankshaft; and

and the heat dissipation unit is used for cooling the cooling liquid passing through the engine unit and comprises a radiator which is arranged at one end of the crankshaft opposite to the silencer, so that the silencer and the radiator are respectively arranged at the left side and the right side of the crankshaft.

2. A motorcycle according to claim 1 wherein said heat dissipating unit further includes a fan between said radiator and said case.

3. A motorcycle according to claim 2, wherein said fan is rotatable coaxially with said crankshaft, and said radiator has a fin group formed with a plurality of water passages corresponding in position to an axial center of said fan and for cooling said coolant, an upper water tank communicating with a top side of said plurality of water passages, and a lower water tank communicating with a bottom side of said plurality of water passages.

4. A motorcycle according to claim 1, wherein a reference line passing through the geometric center of the cylinder in the front-rear direction of the motorcycle is defined, and the engine unit further comprises a cover provided on a side of the case opposite to the radiator, the case having a first case portion between the reference line and the radiator, and a second case portion between the reference line and the cover, a portion of the second case portion cooperating with the cover to define a first transmission chamber on the same side as the muffler.

5. A motorcycle as claimed in claim 4 wherein a central plane is defined which passes through the geometric centre of the motorcycle in the fore and aft direction thereof, and wherein the exhaust unit further comprises a conduit communicating between the cylinder and the muffler, the cylinder being formed with an outlet aperture communicating with the conduit, the muffler being formed with an inlet aperture communicating with the conduit, a longitudinal axis defining a longitudinal axis which is parallel to the central plane and passes through the inlet aperture, a front transverse axis which is perpendicular to the central plane and passes through the outlet aperture, and a rear transverse axis which is perpendicular to the central plane and passes through the inlet aperture, the first transfer chamber being located at least partially within the confines of the cooperation of the central plane, the longitudinal axis, the front transverse axis and the rear transverse axis.

6. A motorcycle as claimed in claim 4 wherein at least a portion of the muffler is located within the projection of the first transfer chamber in the fore-aft direction of the motorcycle.

7. A motorcycle as claimed in claim 5 or 6 further comprising a frame to which the engine unit and the muffler are secured in a non-relative motion.

8. A motorcycle as claimed in claim 4 further comprising a transmission unit connected to the engine unit, a portion of the housing defining a second transmission chamber spaced from the crank chamber in the fore-and-aft direction of the motorcycle, the transmission unit including a first transmission member received in the first transmission chamber and driven by the crankshaft, and a gear train received in the second transmission chamber and driven by the first transmission member, the gear train having an output shaft spaced from and juxtaposed with the crankshaft in the fore-and-aft direction of the motorcycle.

9. A motorcycle according to claim 8 further including a rear wheel spaced from said engine unit, said transmission unit further including a second transmission member driven by said output shaft for driving said rear wheel.